<template>
  <div :style="{width:containerWidth}" :class="{fullscreen:fullscreen}" class="tinymce-container">
    <textarea :id="tinymceId" class="tinymce-textarea" />
    <!-- 上传图片 -->
    <!-- <div class="editor-custom-btn-container">
      <editorImage color="#1890ff" class="editor-upload-btn" @successCBK="imageSuccessCBK" />
    </div> -->
  </div>
</template>

<script>
/**
 * docs:
 * https://panjiachen.github.io/vue-element-admin-site/feature/component/rich-editor.html#tinymce
 */
import editorImage from './components/EditorImage'
import plugins from './plugins'
import toolbar from './toolbar'
import load from './dynamicLoadScript'

// why use this cdn, detail see https://github.com/PanJiaChen/tinymce-all-in-one
const tinymceCDN = 'https://cdn.jsdelivr.net/npm/tinymce-all-in-one@4.9.3/tinymce.min.js'

export default {
  name: 'Tinymce',
  components: { editorImage },
  props: {
    id: {
      type: String,
      default: function() {
        return 'vue-tinymce-' + +new Date() + ((Math.random() * 1000).toFixed(0) + '')
      }
    },
    value: {
      type: String,
      default: ''
    },
    toolbar: {
      type: Array,
      required: false,
      default() {
        return []
      }
    },
    menubar: {
      type: String,
      default: 'file edit insert view format table'
    },
    height: {
      type: [Number, String],
      required: false,
      default: 360
    },
    width: {
      type: [Number, String],
      required: false,
      default: 'auto'
    }
  },
  data() {
    return {
      hasChange: false,
      hasInit: false,
      tinymceId: this.id,
      fullscreen: false,
      languageTypeList: {
        'en': 'en',
        'zh': 'zh_CN',
        'es': 'es_MX',
        'ja': 'ja'
      }
    }
  },
  computed: {
    containerWidth() {
      const width = this.width
      if (/^[\d]+(\.[\d]+)?$/.test(width)) { // matches `100`, `'100'`
        return `${width}px`
      }
      return width
    }
  },
  watch: {
    value(val) {
      if (!this.hasChange && this.hasInit) {
        this.$nextTick(() =>
          window.tinymce.get(this.tinymceId).setContent(val || ''))
      }
    }
  },
  mounted() {
    this.init()
  },
  activated() {
    if (window.tinymce) {
      this.initTinymce()
    }
  },
  deactivated() {
    this.destroyTinymce()
  },
  destroyed() {
    this.destroyTinymce()
  },
  methods: {
    init() {
      // dynamic load tinymce from cdn
      load(tinymceCDN, (err) => {
        if (err) {
          this.$message.error(err.message)
          return
        }
        this.initTinymce()
      })
    },
    initTinymce() {
      const _this = this
      window.tinymce.init({
        selector: `#${this.tinymceId}`,
        language: this.languageTypeList['zh'],
        height: this.height,
        body_class: 'panel-body ',
        object_resizing: false,
        toolbar: this.toolbar.length > 0 ? this.toolbar : toolbar,
        menubar: this.menubar,
        plugins: plugins,
        end_container_on_empty_block: true,
        powerpaste_word_import: 'clean',
        code_dialog_height: 450,
        code_dialog_width: 1000,
        advlist_bullet_styles: 'square',
        advlist_number_styles: 'default',
        imagetools_cors_hosts: ['www.tinymce.com', 'codepen.io'],
        default_link_target: '_blank',
        link_title: false,
        images_upload_handler: (blobInfo, success, failure) => {
          console.log(blobInfo)
          const img = 'data:image/jpeg;base64,' + blobInfo.base64()
          // const img = 'img,' + blobInfo.blob()
          // const img = 'img,' + blobInfo.blobUri()
          // const img = blobInfo.filename()
          // const img = 'img,' + blobInfo.id()
          // const img = 'img,' + blobInfo.name()
          // const img = 'img,' + blobInfo.uri()
          success(img)
        },
        file_picker_types: 'media',
        file_picker_callback: function(cb, value, meta) {
          // 当点击meidia图标上传时,判断meta.filetype == 'media'有必要，因为file_picker_callback是media(媒体)、image(图片)、file(文件)的共同入口
          if (meta.filetype === 'media') {
            // 创建一个隐藏的type=file的文件选择input
            const input = document.createElement('input')
            input.setAttribute('type', 'file')
            input.setAttribute('accept', 'video/*')
            input.onchange = function() {
              const file = this.files[0]
              const notification = _this.createProgressBar()
              const isDemoFlag = 1 // 是否为演示效果，仅演示值为1，正式使用值为0，2019-10-15
              if (isDemoFlag) {
                const localObjUrl = URL.createObjectURL(file)
                cb(localObjUrl, { title: file.name })
                // 关闭进度提示
                window.tinymce.activeEditor.notificationManager.close()
                return
              } else {
                const xhr = new XMLHttpRequest()
                const formData = new FormData()
                xhr.open('POST', _this.apiUrl)
                xhr.withCredentials = _this.credentials
                xhr.upload.onprogress = function(e) {
                  const percent = e.loaded / e.total * 100
                  if (percent < 100) {
                    notification.progressBar.value(percent)
                  } else {
                    notification.progressBar.value(percent)
                    // 关闭进度提示
                    window.tinymce.activeEditor.notificationManager.close()
                  }
                }
                xhr.onerror = function() {
                  console.log(xhr.status)
                  window.tinymce.activeEditor.notificationManager.close()
                  return
                }
                xhr.onload = function() {
                  const json = JSON.parse(xhr.responseText)
                  if (xhr.status < 200 || xhr.status >= 300) {
                    console.log('HTTP 错误: ' + xhr.status)
                    return
                  }
                  // 假设接口返回JSON数据为{status: 0, msg: "上传成功", data: {location: "/localImgs/1546434503854.mp4"}}
                  if (json.status === 0) {
                    // 接口返回的文件保存地址
                    const mediaLocation = json.data.location
                    // cb()回调函数，将mediaLocation显示在弹框输入框中
                    cb(mediaLocation, { title: file.name })
                  } else {
                    console.log(json.msg)
                    return
                  }
                }
                // 假设接口接收参数为file,值为选中的文件
                formData.append('file', file)
                // 正式使用将下面被注释的内容恢复
                // xhr.send(formData);
              }
            }
            // 触发点击
            input.click()
          }
        },
        nonbreaking_force_tab: true, // inserting nonbreaking space &nbsp; need Nonbreaking Space Plugin
        init_instance_callback: editor => {
          if (_this.value) {
            editor.setContent(_this.value)
          }
          _this.hasInit = true
          editor.on('NodeChange Change KeyUp SetContent', () => {
            this.hasChange = true
            this.$emit('input', editor.getContent())
          })
        },
        setup(editor) {
          editor.on('FullscreenStateChanged', (e) => {
            _this.fullscreen = e.state
          })
        }
        // 整合七牛上传
        // images_dataimg_filter(img) {
        //   setTimeout(() => {
        //     const $image = $(img);
        //     $image.removeAttr('width');
        //     $image.removeAttr('height');
        //     if ($image[0].height && $image[0].width) {
        //       $image.attr('data-wscntype', 'image');
        //       $image.attr('data-wscnh', $image[0].height);
        //       $image.attr('data-wscnw', $image[0].width);
        //       $image.addClass('wscnph');
        //     }
        //   }, 0);
        //   return img
        // },
        // images_upload_handler(blobInfo, success, failure, progress) {
        //   progress(0);
        //   const token = _this.$store.getters.token;
        //   getToken(token).then(response => {
        //     const url = response.data.qiniu_url;
        //     const formData = new FormData();
        //     formData.append('token', response.data.qiniu_token);
        //     formData.append('key', response.data.qiniu_key);
        //     formData.append('file', blobInfo.blob(), url);
        //     upload(formData).then(() => {
        //       success(url);
        //       progress(100);
        //     })
        //   }).catch(err => {
        //     failure('出现未知问题，刷新页面，或者联系程序员')
        //     console.log(err);
        //   });
        // },
      })
    },
    destroyTinymce() {
      const tinymce = window.tinymce.get(this.tinymceId)
      if (this.fullscreen) {
        tinymce.execCommand('mceFullScreen')
      }

      if (tinymce) {
        tinymce.destroy()
      }
    },
    setContent(value) {
      window.tinymce.get(this.tinymceId).setContent(value)
    },
    getContent() {
      window.tinymce.get(this.tinymceId).getContent()
    },
    imageSuccessCBK(arr) {
      const _this = this
      arr.forEach(v => {
        window.tinymce.get(_this.tinymceId).insertContent(`<img class="wscnph" src="${v.url}" >`)
      })
    },
    createProgressBar() {
      const notification = window.tinymce.activeEditor.notificationManager.open({
        text: '视频上传进度',
        progressBar: true
      })
      return notification
    }
  }
}
</script>

<style scoped>
.tinymce-container {
  position: relative;
  line-height: normal;
}
.tinymce-container>>>.mce-fullscreen {
  z-index: 10000;
}
.tinymce-textarea {
  visibility: hidden;
  z-index: -1;
}
.editor-custom-btn-container {
  position: absolute;
  right: 4px;
  top: 4px;
}
.fullscreen .editor-custom-btn-container {
  z-index: 10000;
  position: fixed;
}
.editor-upload-btn {
  display: inline-block;
}
</style>
